Home / 21,334.89-29,437.17-12,377.31

Finding the Fourth Proportional to 21,334.89, 29,437.17 and 12,377.31

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Solution

The fourth proportional to 21,334.89, 29,437.17 and 12,377.31 is: 17,077.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,334.89 : 29,437.17 = 12,377.31 : x
  2. Step 2: Convert to fraction form
    21,334.89/29,437.17 = 12,377.31/x
  3. Step 3: Cross multiply
    21,334.89x = 29,437.17 × 12,377.31
  4. Step 4: Simplify right side
    21,334.89x = 364,352,891.43
  5. Step 5: Solve for x
    x = 364,352,891.43/21,334.89
  6. Step 6: Final answer
    x = 17,077.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.